Serving tray



FIG. 1 is a front elevational perspective view of a serving tray showing the new design;

FIG. 2 is side view of the tray shown in FIG. 1;

FIG. 3 is a top view of the tray shown In FIG. 1; and,

FIG. 4 is a bottom view of the tray shown in FIG. 1. 

The ornamental design for the serving tray, as shown and described. 